Alamofire-Swift Networking网络库

预览图

Swift Alamofire 简介

Alamofire是 Swift 语言的 HTTP 网络开发工具包,相当于Swift实现AFNetworking版本。

当然,AFNetworking非常稳定,在Mac OSX与iOS中也能像其他Objective-C代码一样用Swift编写。不过Alamofire更适合Swift语言风格习惯(Alamofire与AFNetworking可以共存一个项目中,互不影响).

Alamofire 取名来源于 Alamo Fire flower

Alamofire安装使用方法

使用CocoaPods安装，在podfile

source 'https://github.com/CocoaPods/Specs.git'
platform :ios,'8.0'
use_frameworks!

pod 'Alamofire','~> 1.2'

submodule 方式安装

$ git submodule add https://github.com/Alamofire/Alamofire.git

1.下载源码将Alamofire.xcodeproj拖拽至工程中如下图:

2.工程->Build Phases->Target Dependencies 增加Alamofire

3.点击如下图“+”按钮选择"New Copy Files Phase"添加,改名为“Copy Frameworks”并 选择选项下的“ Destination”为“ Frameworks”，然后添加“Alamofire.framework”

4.在需要使用的swift文件中加入import Alamofire，如下图:

功能

• Chainable Request / Response methods
• URL / JSON / plist Parameter Encoding
• Upload File / Data / Stream
• Download using Request or Resume data
• Authentication with NSURLCredential
• Progress Closure & NSProgress
• cURL Debug Output

1.0版本计划

1.0版本将在Swift 1.0发布之后。

• 100% Unit Test Coverage
• Complete Documentation
• HTTP Response Validation
• TLS Chain Validation
• UIKit / AppKit Extensions

环境要求

Xcode 6

iOS 7.0+ / Mac OS X 10.9+

Alamofire使用方法

GET 请求

Alamofire.request(.GET,"http://httpbin.org/get")

Alamofire.request(.GET,"http://httpbin.org/get",parameters: ["foo": "bar"])

Alamofire.request(.GET,parameters: ["foo": "bar"])
         .response { (request,response,data,error) in
                     println(request)
                     println(response)
                     println(error)
                   }

Alamofire.request(.GET,parameters: ["foo": "bar"])
         .responseString { (request,string,error) in
                  println(string)
         }

HTTP 方法（Medthods）

Alamofire.Method enum 列表出在RFC 2616中定义的HTTP方法 §9:

public enum Method: String {
    case OPTIONS = "OPTIONS"
    case GET = "GET"
    case HEAD = "HEAD"
    case POST = "POST"
    case PUT = "PUT"
    case PATCH = "PATCH"
    case DELETE = "DELETE"
    case TRACE = "TRACE"
    case CONNECT = "CONNECT"
}

这些值可以作为Alamofire.request请求的第一个参数.

Alamofire.request(.POST,"http://httpbin.org/post")

Alamofire.request(.PUT,"http://httpbin.org/put")

Alamofire.request(.DELETE,"http://httpbin.org/delete")

POST请求

let parameters = [
    "foo": "bar","baz": ["a",1],"qux": [
        "x": 1,"y": 2,"z": 3
    ]
]

Alamofire.request(.POST,"http://httpbin.org/post",parameters: parameters)

发送以下HttpBody内容:

foo=bar&baz[]=a&baz[]=1&qux[x]=1&qux[y]=2&qux[z]=3

Alamofire 使用Alamofire.ParameterEncoding可以支持URL query/URI form,JSON,PropertyList方式编码参数。

enum ParameterEncoding {
    case URL
    case JSON(options: NSJSONWritingOptions)
    case PropertyList(format: NSPropertyListFormat,options: NSPropertyListWriteOptions)

    func encode(request: NSURLRequest,parameters: [String: AnyObject]?) ->
                    (NSURLRequest,NSError?)
    { ... }
}

let URL = NSURL(string: "http://httpbin.org/get")
var request = NSURLRequest(URL: URL)

let parameters = ["foo": "bar"]
let encoding = Alamofire.ParameterEncoding.URL
(request,_) = encoding.encode(request,parameters)

Alamofire.request(.POST,parameters: parameters,encoding: .JSON(options: nil))
         .responseJSON {(request,JSON,error) in
            println(JSON)
         }

Response 方法

• response()
• responseString(encoding: NSStringEncoding)
• responseJSON(options: NSJSONReadingOptions)
• responsePropertyList(options: NSPropertyListReadOptions)

上传（Uploading）

• File
• Data
• Stream
• Multipart (Coming Soon)

let fileURL = NSBundle.mainBundle()
                      .URLForResource("Default",withExtension: "png")

Alamofire.upload(.POST,file: fileURL)

上传进度

Alamofire.upload(.POST,file: fileURL)
        .progress { (bytesWritten,totalBytesWritten,totalBytesExpectedToWrite) in
            println(totalBytesWritten)
        }
        .responseJSON { (request,error) in
            println(JSON)
        }

下载

• Request
• Resume Data

Alamofire.download(.GET,"http://httpbin.org/stream/100",destination: { (temporaryURL,response) in
    if let directoryURL = NSFileManager.defaultManager()
                          .URLsForDirectory(.DocumentDirectory,inDomains: .UserDomainMask)[0]
                          as? NSURL {
        let pathComponent = response.suggestedFilename

        return directoryURL.URLByAppendingPathComponent(pathComponent)
    }

    return temporaryURL
})

let destination = Alamofire.Request.suggestedDownloadDestination(directory: .DocumentDirectory,domain: .UserDomainMask)

Alamofire.download(.GET,destination: destination)

Alamofire.download(.GET,destination: destination)
         .progress { (bytesRead,totalBytesRead,totalBytesExpectedToRead) in
             println(totalBytesRead)
         }
         .response { (request,_,error) in
             println(response)
         }

认证（Authentication）

• HTTP Basic
• HTTP Digest
• Kerberos
• NTLM

let user = "user"
let password = "password"

Alamofire.request(.GET,"https://httpbin.org/basic-auth/(user)/(password)")
    .authenticate(HTTPBasic: user,password: password)
    .response {(request,error) in
        println(response)
        }

let user = "user"
let password = "password"

let credential = NSURLCredential(user: user,password: password,persistence: .ForSession)
let protectionSpace = NSURLProtectionSpace(host: "httpbin.org",port: 0,`protocol`: "https",realm: nil,authenticationMethod: NSURLAuthenticationMethodHTTPBasic) Alamofire.request(.GET,"https://httpbin.org/basic-auth/(user)/(password)") .authenticate(usingCredential: credential,forProtectionSpace: protectionSpace) .response {(request,error) in
        println(response)
}

Printable

let request = Alamofire.request(.GET,"http://httpbin.org/ip")

println(request)
// GET http://httpbin.org/ip (200)

调试

let request = Alamofire.request(.GET,parameters: ["foo": "bar"])

debugPrintln(request)

Output (cURL)

$ curl -i 
    -H "User-Agent: Alamofire" 
    -H "Accept-Encoding: Accept-Encoding: gzip;q=1.0,compress;q=0.5" 
    -H "Accept-Language: en;q=1.0,fr;q=0.9,de;q=0.8,zh-Hans;q=0.7,zh-Hant;q=0.6,ja;q=0.5" 
    "http://httpbin.org/get?foo=bar"

更多的用法将会在接口文档中一一列出,敬请期待。

Alamofire与AFNetworking是同一个作者

（编辑：李大同）

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